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Old 09-26-2021, 08:14 AM   #1
bdoppel
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Join Date: May 2021
Location: Kalamazoo
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Blank tank plumbing question

Hi All!
I have a question about how the toilet is plumbed to the black tank in my 2020 Springdale SG280bh. I just replaced my toilet (Dometic 300) and when I removed the old one, I was expecting a straight pipe to the black tank and an odor. Instead, there was NO smell whatsoever and some standing water about a foot down from the toilet.

I *know* the tank was empty when we last went camping, although the meter shows half full.

So my question is there a p-trap between the toilet and the black tank or is it just a poop mountain that needs to be dealt with?

When I dump the tank, everything seems to flow out fine and I ALWAYS use the tank sprayer for several minutes until I don't see any more material coming out.

Thanks!
Bob
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Old 09-26-2021, 01:30 PM   #2
flybouy
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There is no P trap. You could be seeing the bottom of the tank. I put about 5 gal in the tank after dumping. It’s not good to start with a dry tank as things will stick to the bottom
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Old 09-26-2021, 01:35 PM   #3
bdoppel
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Thanks, Marshall. That could be it. I also put ~5 gals in after I dump the tanks before heading home, hoping the agitation helps clean it out.

Bob
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Old 09-26-2021, 01:39 PM   #4
chuckster57
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Others say the sensors arenít worth a crap (pun intended), but very trailer I have owned and worked has worked when they are clean. You probably have toilet paper hung up, did the monitor panel say empty when you first bought the trailer?
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Old 09-27-2021, 01:16 PM   #5
Falcon67
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I haven't really looked at our new 220 pot, but same in our race trailer - opt sits directly over the black tank. I replaced the potty in the race trailer year before last because I didn't get all the water out of the flush valve. Oops. Had a spare pot in a box, so R&R was just quicker/easier. And same - after every use I spray the heck out of the black tank with one of those sprayer/whirligig things. The sensors work fine in that trailer even after 4 years of use. We use an additive, make sure we use septic friendly/easy dissolve paper and rinse-rinse-rinse. Will probably use a combo with the installed wash out on the road side of the RV and the wand.
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